Title

Effect of rock candy crystals in different temperatures.

Problem Scenario

What is the difference in rock candy crystal growth when grown in different water temperature?

Broad Question

Does the temperature of water affect the growth of rock candy crystals?

Specific Question

Do rock candy crystals grow better in (hot, cold, or worm water)?

Hypothesis

I hypothesize that rock candy crystals grow better in (cold water).

Graph of Hypothesis

Variables

Independent Variable:

Temperature of water.

Dependent Variable:

Growth of rock candy crystals.

Variables That Need To Be Controlled:

1.The area of the rock candy crystals.
2. The utensil used.

Vocabulary List That Needs Explanation

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General Plan

I will grow rock candy in different temperatures/places. Then I will mass the rock candy.

Potential Problems And Solutions

None.

Safety Or Environmental Concerns

None.

Experimental Design

(add the correct headings from the experimental design page before beginning)

Controlled, manipulated experiment

What is your experimental unit?

The mass of the Rock candy after growing them.

Number Of Trials:

3.

Number Of Subjects In Each trial:

3.

Number of Observations:

9.

When data will be collected

3/15/2013

Where will data be collected?

At my house, in my fridge, under a bright light in my living room,
and on my counter in the kitchen.

Resources and Budget Table

Item	Where I will get this	Cost
Poster Board	Mr. Biche/Home	$0.00-$5.00
Sugar	Home/Store	$0.00-$4.00
Cups	Mr. Biche	$0.00
Pencils	Home	$0.00
Yarn	Mr. Biche	$0.00
Water	Home	$0.00

Detailed Procedure

Day 1
1. Tie strings on pencils and place aside.
2. Boil water.
3. Put 9 cups of water into a pan and let boil. Once the water is boiling add sugar until you cant stir anymore while constantly stirring .
4. Pour the same amount of sugar + water into the 9 cups.
5. Put 3 cups into a fridge. Leave 3 cups out. And put 3 cups under a bright light.

Day 2
1. Record temperature of each cup.
2. Observe and take notes.

Day 3
1. Record temperature of each cup.
2. Observe and take notes.

Day 4
1. Record temperature of each cup.
2. Observe and take notes.

Day 5
1. Record temperature of each cup.
2. Observe and take notes.

Day 6
1. Record temperature of each cup.
2. Observe and take notes.
3. Remove 3 cups from the fridge, 3 cups out from under the bright light, and place the 6 cups on the counter with the 3 cups I left out.
4. Record temperature of each cup. (find the average)
5. Gently take out rock candy and place on piece of (tin foil?) then gently wrap them.

Diagram

Photo List

rock candy in cups, placed on/in bags.

Time Line

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Data Table

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Data Analysis

All Raw Data

Graphs

Photos

Results

Two of the cups from the Cups in the fridge have the most mass, but one of the results from a cup
left out had a better mass than a cup in the fridge. Both the cups in the fridge and the cups left out
have a better mass than the cups left under a bright light.

Conclusion

The rock candy placed in the fridge grew the most, while the crystals placed under a bright light grew the least.

Discussion

While I was doing my experiment I noticed the sugar stuck to the string but didn't start to harden,
it was more of a liquid. While observing the growth of the crystals I didn't see a change, the sugar
didn't seam to grow any faster. After a week had gone by I took the crystals out and placed them
on plastic baggies, I let them dry over night. When I got up the crystals were almost completely
dry and had small crystals on the string. I placed the crystals in the bags and brought them to
school. At school I massed the crystals. From the mass the cups placed in the fridge has grown
the most. But from my observations the cups left out grew the most.

Benefit to Community and/or Science

If someone wants to make rock candy and wants the quickest way to make it they could put it in a certain
place/temperature for the best results.

Background Research

References

• "When Science Is Sweet: Growing Rock Candy Crystals."

//When Science Is Sweet: Growing Rock Candy Crystals//.N.p., n.d. Web. 22 Mar. 2013.

Abstract

For my science fair project I grew rock candy crystals at different temperatures to see if there was a difference in the growth. While I was doing my experiment I didn't notice that much of a difference, but after I let the crystals dry I noticed small crystals along the strings, some of which had more crystals.